The Postman app
The ever-improving Postman app (a new release every two weeks) gives you a full-featured Postman experience.
Not your OS? Download for Windows (x32 / x64) or Linux (x64)
https://dl.pstmn.io/download/latest/osx
https://dl.pstmn.io/download/latest/win32
https://dl.pstmn.io/download/latest/win64
https://dl.pstmn.io/download/latest/linux64